Stem-winding and stem-setting watch.



No. 864,402. PATENTED AUG. 27, 1907.

' A. BANNATYNH.

STEM WINDING AND STEM SETTING WATCH. APPLICATION FILED-1330.21. 190s.

nu: lvonms PETERS co, WASHINGTON, n. c.

UNITED STATES PATENT OFFICE.

ARCHIBALD BANNATYNE, OF WATERBURY, CONNECTICUT, ASSIGNOR TO THEBANNATYNE WATCH 00., OF WATERBURY, CONNECTICUT, A CORPORATION.

STEM-WINDING- .AND STEM-SETTING WATCH.

Specification of Letters Patent.

Patented Aug. 27, 1907.

Application filed December 21,1905. Serial No. 292,634-

To all whom it may concern:

Be it known that I, ARCHIBALD BANNATYNE, a citizen of the United States,residing at Waterbury, in the county of New Haven and State ofConnecticut, have invented a new and useful Improvement in Stern-Winding and Stem-Setting Watches; and I do hereby declare the following,when taken in connection with the accompanying drawings and the lettersof reference marked thereon, to be a full, clear, and exact descriptionof the same, and which said drawings constitute part of thisspecification, and represent, in

Figure 1 a front view of a watch movement containing my improvement.Fig. 2 a broken view of the watch in rear elevation with the rearmovement plate removed and the pendant stem shown in vertical section.Fig. 3 a plan view of the front movement plate, showing parts of myimproved mechanism applied to it. Fig. 4 a broken vertical section onthe line ab of Fig. 2 with the pinions and wheels in elevation. Fig. 5 aview in vertical section with the bridge removed and the wheels andpinions in vertical section. Fig. 6 a detached view in front elevationof the bridge. Fig. 7 an edge view thereof. Fig. 8 a detached view ofthe fixed and movable studs with the pull stem in position for winding.Fig. 9 a corresponding view of the studs with the push stem in positionfor winding. Fig. 10 a corresponding view of the studs with a brokenview of the push-and-pull stem in position for winding.

My invention relates to an improvement in stemwinding and stem-settingwatches, the object being to provide such watches with a simple andreliable stemwinding and stem-setting mechanism constructed withparticular reference to being converted, by merely changing the stem,from a pull set to a push set or vice versa, or from a push set or pullset to a push-and-pull set A further object of my invention is toprovide for detaching the winding and setting mechanism from themovement without removing the movement from the case and withoutremoving any portion of the time train.

With these ends in view, my invention consists in a watch having certaindetails of construction and combinations of parts as will be hereinafterdescribed and pointed out in the claims.

For the purpose of illustration, I have chosen to illustrate the watchas furnished with a pull stem 2, which, however, may be replaced by apush stem 3 or a pushand-pull stem 4, these three stems beingdifferentiated from each other as required to convert the watch from apull set to a push set or vice versa, or to a push and pull set, allwithout in any way changing any other part of the watch. The outer endof the stem 2 is made round in cross section for its bearing in thependant 5 and provided with the usual winding crown 6. Midway of itslength it is formed with a wide annular recess 7 for the reception of aretaining screwS in the pendant 5. Below the recess '7 the stem issquared to form a key 9 whereby it is coupled with a driving pinion 1.0through which it is free to move back and forth. Below the key 9 thestem is reduced in diameter to form a clearance space 11, while at itsextreme lower end it is formed with a locking-head 12 formed at itsupper end with a conical operating surface 13 and at its lower end witha conical point 14.

The driving pinion 10 aforesaid is formed with an upwardly extending hub15 adapting it to be mounted so as to turn loosely in the horizontal arm16 of a bridge 17 the ends of which are formed with perforations 18 forthe reception of screws 19 by means of which the bridge is fastened tothe front movement plate 20 directly over an interior chamber 2]. formedin the plate by striking a portion of the same inward. At the upper endof the chamber 21, the said front movementplate is cut away to form ahorizontal bearing edge 21 upon which the lower surface of the drivingpinion 10 may bear and which will take the downward thrust upon thepinion due to the inward thrust through it of the stem 2. The drivingpinion 10 which is thus permanently connected with the bridge in whichit is free to rotate in either direction, itself meshes into a drivingwheel 22 located at a right angle to it and turning loosely upon a stud23 mounted in the upper end of a swinging plate-like carrier 24 andhaving its inner end reduced in diameter to form a journal 25 entering abearing hole 26 in the front-plate 20.

As shown, the bridge 17 is formed with a cross piece 17 in which thereduced outer end of the stud 23 is supported, though this is notessential. The driving wheel 22 carries upon its outer face a concentricpower compounding pinion 27 turning with it, having fewer teeth andmeshing into a winding and setting wheel 28 turning upon a stud 29mounted in the lower end of the carrier 24.

I call the pinion 27 as I may here explain, a power compounding pinionbecause by being smaller in diameter than the wheel 72 and also smallerin diameter than the wheel 28, it effects a gain in power represented byits differentiation in diameter with respect to the said wheels.

When the carrier 24 is swung from right to left upon the stud 23, theteeth of the wheel 28 mesh into the intermediate setting wheel 30 whichturns 011 a stud 31 and meshes into a minute wheel 32 which turns on astud 33 and carries a pinion 34 meshing into the hour wheel 35 of thewatch. The minute wheel 32 meshes into the ordinary cannon pinion whichis not shown, but located beneath the hour wheel 35 in the usual manner.When, on the other hand, the carrier 24 is swung from left to right onthe stud 23, the wheel 28 is meshed, as shown in Fig. 1, into a ratchetwheel 36 on a winding arbor 37. In order to hold the ratchet wheel andthus prevent the spring (not shown) from unwinding, I employ, as shown,an ordinary ratchet pawl 38 mounted upon a stud 39 and actuated by thespring 40 mounted in a split stud 41, all of ordinary construction.

For swinging the carrier 24 into its winding and setting positionsrespectively, I provide it with an inwardly extending stud 42 passinginward through a segmental slot 43 in the front movement plate andengaged by a spring 44 which exerts a constant effort to swing thecarrier from left to right into its winding position in which the wheel28 is meshed into the ratchet-wheel 36. This spring is necessary to keepthe wheel 28 in mesh with the ratchet-wheel 36 during what is calledback ratcheting in winding the watch. The operating stud 42 coacts witha similar stud 45 fixed in the front movement plate 20 and projectingrearwardly therefrom, the two studs 42 and 45 being respectively movableand fixed. These studs are I located close together as shown in Fig. 3with just space enough between them for the reception and opera tion ofthe inner end of the pull stem 2, the fixed stud 45 constituting, as itwere, a fulcrum for the operation of the movable stud 42. When the studsare in the positions shown in Fig. 2, the clearance portion 11 of thestem 2 is between them. In this position the watch is ready for winding.To set the watch, the stem is pulled outward, bringing its conicaloperating surface 13 into coaction with the studs 42 and 45 whereby thestud 42 is swung from right to left against the tension of the spring 44and the carrier 24 correspondingly swung from right to left whereby thewheel 28 is disengaged from the wheel 36 and brought into mesh with theintermediate setting-wheel 30, the stem being pulled outwardsufficiently to locate its lockinghead 12 between the studs, whereby thespring 44 is prevented from swinging the carrier back from left to rightinto its winding position; as the locking-head 12 is cylindrical it doesnot prevent the free rotation of the stem 2 for setting. After the watchhas been set, the stem is thrust inward to bring its clearance space 11into registration with the studs 42 and 45 and permit the spring 44 torestore the carrier to its normal or winding position. The conical point14 of the stem permits the insertion of the same into normal position inthe movement.

If it is desired to convert the watch from a pull set to a push set, Ireplace the pull stem 2 by the push stem 3 without any change of themechanism itself.

studs which are forced apart against the tension of the spring 44 by theconical end 14 of the stem, whereby the carrier is swung into itssetting position in which it is held by the parallel sides 14 of thelower end of the cylindrical stem, these sides corresponding to thelocking-head 12 of the pull stem 2. Again, without any change whateverin the mechanism by replacing either the stem 2 or the stem 3 by thepush-and-pull stem 4, I may convert the watch into one in which the stemis pushed inward for setting as well as pulled out for setting. To thisend the stem 4 is formed with a conical surface 46 and with acorresponding conical surface 47, these surfaces being. located at theopposite ends of a surface 47 will separate the studs and bring thelocking portion 50 into play for holding the carrier in its settingposition; while on the other hand, if the stem is pulled outward, theconical surface 46 will coact with the studs to bring the carrier intoits setting position in which it will be held by the locking-portion 49of the stem.

The stems 2, 3 and 4 are, as shown by Fig. 2, all made smaller indiameter than the diameter of the central bore of the pendant 5 so thatthey are free to tilt later ally, as it were, therein to a degreesufficient to permit their lower ends to move laterally with respect tothe fixed fulcrum 45 whereby the full diameters of the lower ends of thestems may be taken advantage of instead of the radii as heretofore. Forexample, when the stem 2 is pulled outward, its conicaloperating-surface 13 engages with the stationary stud 45 and the stem isdeflected from left to right for a distance represented by thedifference between its full diameter and its diameter in its clearancespace 11. This movement of the stem from left to right correspondinglymoves the movable stud 42 mounted in the swinging carrier 24. At thesame time the stem 2 is being bodily deflected from left to right asabove described by the coaction of its surface 13 with the stationarystud 45, its surface 13 is coacting with the movable stud 42 to mdve thesame from left to right a distance represented by the distance betweenits full diameter and its diameter in its clearance space 11. Itfollows, therefore, that the bodily movement from left to right of thestem permitted by its adaptability to tilt, contributes, as it were, tothe movement of the movable stud 42 from left to right due to the directcoaction of the stem with it. In this way the full diameter of the stemis taken advantage of, and, I may if I desire, reduce the stem indiameter onehalf. This principle of providing for the tilting or lateralas well as the longitudinal and rotary movement of the stem, appliesequally well to the stems 3 and 4. I may add that the driving-pinion 10journaled loosely in the horizontal arm 16 of the bridge 17 forms, as itwere, a fulcrum or point of purchase for the lateral tilting ofthe'stem.

I would have it understood that I do not limit my self to the 'exactconstruction shown and described, but hold myself at liberty to makesuch departures therefrom as fairly fall within the spirit and scope ofmy The stem 3 is normally located entirely above the two invention.

I claim:

1. In a stemwinding and stem-setting mechanism for watches, thecombination with a longitudinally and laterally movable and rotary stem,of fixed and movable instrumentalities coacting directly with the saidstem, the said movable instrumentality moving laterally with respect tothe stem for reducing the required longitudinal movement thereof.

2. In a stern-winding and stern-setting mechanism for watches, thecombination with a movable carrier upon which one or more members of thesaid mechanism are mounted, a stud carried by the said carrier, at fixedfulcrum coacting with the said stud, and a longitudinally and laterallymovable and rotary stern coacting directly with the said stud andfulcrum for moving the carrier from its winding to its setting positionwhereby by making the stem laterally movable the extent of itslongitudinal movement may be reduced.

2-3. In a stem-winding and stein-setting mechanism for watches, thecombination with a movable carrier upon which one or more gears of thesaid mechanism are mounted, a stud carried by the said carrier, a fixedful crum, and a longitudinally and laterally movable and rotary stemhaving one or more beveled operating-surfaces coacting with the saidstud and fulcrum for moving the carrier from its winding into itssetting position.

4. In a stem-winding and stem-setting mechanism for watches, thecombination with a movable carrier, of an o 'xerating-stud carriedthereby, a stationary fulcrum adjacent to the said stud, and alongitudinally and laterally movable and rotary stem having a clearancespace, one or more conical operating-surfaces and a cylindricaloperating portion for coacting with the said stud and fulcrum, thelatter moving the stem laterally and hence the stud in addition to thedirect movement of the stud by the surfaces of the stem.

In a stem-winding and stem-setting mechanism for watches, thecombination with a swinging carrier, of an operating stud extendinginwardly therefrom, a stationary siud adjacent to the operating stud,and a longitudinally and laterally movable and rotary stem coactingdirectly with the said studs for moving the carrier from its Windinginto its setting position.

6. In a stem-winding and stenrsetting watch, the combination with thefront and rear movement plates thereof, of a swinging carrier located infront of the front movement-plate, an operating-stud carried thereby andextending inward therefrom between the two plates, a stationary studmounted in one of the plates and located between them adjacent to thesaid opei'atingstud, and a longitudinally and laterally movable androtary stem passing between the said studs and coacting directly withthem.

7. In a stem-winding and stem-setting watch, the combination with thefront and rear movement-plates thereof, of a swinging carrier located infront of the front move mentplate, an operating stud carried thereby andextending inward therefrom through the front movementplate and into therear movement-plate, a stationary stud mounted in the frontmovementplate and located adjacent to the operating-stud, and alongitudinally and laterally movable and rotary stem passing between andcoacting directly with both of the said studs for moving the saidcarrier from its winding into its setting position.

8. In a stenrwinding and stem-setting watch, the combination with thefront and rear movement-plates thereof, the front plate being formedwith an exterior chamber produced by striking a portion of it inward; ofa swinging carrier located in the'said chamber, a removable bridgespanning said chamber to confine the swin 'ng carrier therein, anoperating-stud mounted in the carrier and extending inwardly through thefront movementplate into the space between the two movement-plates, astationary stud mounted in one of the plates and located adjacent to thesaid operating stud, and a longitudinally and laterally movable androtary stem passing between the said studs and coacting directly withthem for moving the carrier from its setting into its winding position.

9. In a stem-winding and stenrsetting watch, the com bination with thefront and rear movement-plates thereof, of a bridge removably applied tothe front movement-plate, a swinging carrier confined in place by thesaid bridge, a driving pinion mounted in the bridge, and alongitudinally and laterally movable and rotary stem coacting with thecarrier for moving it from its winding to its setting position andfulcruming for its lateral movement in the said pinion.

10. In a stein-winding and stem-setting mechanism for watches, thecombination with a front movement-plate struck inward to form anexterior chamber, of a swinging carrier located in the said chamber, aremovable britge extending-over the said chamber and formed with arearwardly extending horizontal arm, a driving pinion loosely journaledin the said arm and having a square opening, and a longitudinally andlaterally movable and rotary stem passing through the said opening andcoacting with the carrier for moving it from its winding to its settingposition.

11. In a stem-winding and stem-setting mechanism for watches, thecombination with the front and rear movementplates thereof, of aremovable bridge applied to the front movement-plate, a removablecarrier confined in place by the said bridge, a driving pinion journaledin the said bridge, and a removable stem passing through the saiddriving pinion, the said bridge, carrier and stem being removablewithout removing the movement from the watch case.

12. In a stem-winding and stein-setting mechanism for watches, thecombination with the front and rear movement-plates thereof, of aremovable bridge applied to the front movement-plate, a driving pinionmounted in the said bridge, a removable carrier confined in place by thesaid bridge, a stud upon which the said carrier swings, at

driving wheel meshed into by the said pinion and mounted upon the saidstud, a winding-and-setting wheel carried by the carrier and driven bythe said winding wheel, and a winding and setting stem passing throughthe said driving pinion which it rotates and in its longitudinalmovement through the said pinion moving the said carrier from itswinding to its setting position.

13. In a stenrwinding and stem-setting mechanism for watches, thecombination with a front movementplate struck inward at its upper end toform a chamber the upper portion of which is cut away to form ahorizontal bearing edge, of a carrier located in the said chamber, abridge confining the said carrier in place and having an inwardlyextending horizontal arm, a driving pinion journaled in the said arm inposition to rest upon the said bearing edge, gears coacting with thesaid pinion, and a longitudinally and laterally movable stem passingthrough the'said pinion and coacting with the carrier for moving thesame from its winding to its setting position.

14. In a stem-winding and stem-setting watch, the com bin-ation with amovement-plate thereof, of a bridge removably secured thereto, a drivingpinion mounted therein, a movable carrier, a driving wheel carriedthereby, a power-compounding pinion concentric with and turning with thesaid driving-wheel, a winding-aml setting wheel carried by the carrierand driven by the said power-compounding pinion, and a stem for swingingthe carrier from its winding into its setting position.

15. In a stem-winding and stem-setting watch, the com bination with amovement-plate thereof, of a bridge applied to the said plate, aswinging carrier, a stud mounted in the said carrier and supported bythe said plate and bridge, a driving pinion carried by the said bridge,a driving wheel mounted upon the said stud and meshed into by the saidpinion, a winding-and-setting wheel carried by the said carrier anddriven by the s. id wheel, and a longitudinally movable stem engagingthe said carrier for moving the same from its winding to its settingposition.

16. In a stemwinding and stem-setting mechanism for watches, thecombination with a swinging carrier, of an operating stud carriedthereby, a stationary stud located adjacent thereto, and a laterally andlongitudinally movable and rotary winding-and-setting stem passingbetween the said studs and having a clearance space and conicaloperatingfaces respectively located at the opposite ends thereof,whereby the stem may be used to convert the watch from a push set to apull set and vice versa.

17. In a stenrwinding and stem-setting mechanism for watches, thecombination with a swinging carrier, of an operating stud carriedthereby, and a stationary stud located adjacent thereto, the said studsbeing arranged for the passage between them of a longitudinally movablestem and constructed to have their upper and lower faces on gagedthereby for its coaction with them to swing the carrier from its windingto its setting position.

In testimony whereof, I have signed this specification in the presenceof two subscribing witnesses.

ARCHIBALD BANNATYNE.

Witnesses Fnnomuc C. EAnLu, Gnonon D. SEYMOUR.

